Single-atom catalysts provide an effective approach to reduce the amount of precious metals meanwhile maintain their catalytic activity. However, the sluggish activity of the catalysts for alkaline water dissociation has hampered advances in highly efficient hydrogen production. Herein, we develop a singl...
Introduction Producing hydrogen via water electrolysis has been regarded as one of the most promising approaches to mediate the climate change and the global energy crisis1,2. In practical applications, alkaline water electrolysis and proton exchange membrane (PEM)-based water electrolysis in acid elect...
The development of efficient and cost-effective water splitting electrolyzers is a fundamental step to support the achievement of climate neutrality by using renewable energy sources to produce green H2 as a form of clean fuel. In this work, we investigated Pt-based nanostructured cathodes for high...
In addition, we took one sample from the groundwater draining into the lake at the bank of one of the lagoons on the western side of the lake (“seepage” sample), and a near-shore surface sample of the nearby crater lake, Lake Atexcac (Fig. 1), close to where the path reaches ...
As the most well-known electrocatalyst for cathodic hydrogen evolution in water splitting electrolyzers, platinum is unfortunately inefficient for anodic oxygen evolution due to its over-binding with oxygen species and excessive dissolution in oxidative
water and MeOH for 3 min with the assistance of ultrasonication, and then dried at 80 °C overnight. The average loading amount of LDH on Ni foam is 1.4 mg cm−2. Besides, the powder-based catalysts were also collected by scraping the deposited materials on Ni foam, donated ...
durability test was performed at room temperature in H2-saturated 0.1M KOH with the cyclic potential sweeping between −0.2 V to 0.2 V at a sweep rate of 200 mV s−1.gChronoamperometry (j- t) responses recorded on Ni5.2WCu2.2alloy and Pt/C catalyst at a 300 mV ...
Electrochemical measurement of the VN/C nanocomposite. Electrochemical characterizations were performed on a CHI660E electrochemical workstation with a three-electrode system consist of a glassy carbon electrode of 5 mm in diameter as the working electrode, a Pt foil as the counter electrode ...
(Fig.3g), suggesting selective OER in the alkaline adjusted salty water. We also collected natural seawater from Galveston Bay near Houston, Texas, USA (Supplementary Fig.16) and prepared an alkaline natural seawater electrolyte (1 M KOH + Seawater), in which the OER activity of the ...
The X-ray absorption spectroscopy is used to probe the impact of alloying Mo(W) on the Ni chemical environment. Figure2apresents the X-ray absorption near-edge structure (XANES) spectra of MoNi4and WNi4at Ni K-edge, which are similar to those of the freshly synthesized Ni and Ni foil re...